Simple wake-up radio prototype

  • Authors:
  • Pekka Koskela;Mikko Valta

  • Affiliations:
  • Network Technologies, VTT Technical research centre of Finland;Network Technologies, VTT Technical research centre of Finland

  • Venue:
  • Proceedings of the 6th Workshop on Hot Topics in Embedded Networked Sensors
  • Year:
  • 2010

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Abstract

Today more and more wireless sensors are powered by batteries. To avoid frequent battery replacement and to provide easy maintenance, sensor nodes should operate energy-efficiently. One well-known and significant source of energy drainage is radio idle listening. One common method to avoid idle listening, is to design MAC protocols that maximise the sleeping time and minimise the duty cycle of the radio. An alternative approach is to utilize hardware solutions such as a wake-up radio. The wake-up radio is designed as an ultra low-power radio, which is always on, and which triggers the sleeping device when communication with the device is required. This paper reports on the design, implementation and performance measurements for a simple wake-up radio construction with 4.7 μW power consumption.